diff --git a/plugins/lang-groovy/src/test/java/org/elasticsearch/script/groovy/GroovySecurityTests.java b/plugins/lang-groovy/src/test/java/org/elasticsearch/script/groovy/GroovySecurityTests.java
index b222b44b838..258d957d77e 100644
--- a/plugins/lang-groovy/src/test/java/org/elasticsearch/script/groovy/GroovySecurityTests.java
+++ b/plugins/lang-groovy/src/test/java/org/elasticsearch/script/groovy/GroovySecurityTests.java
@@ -39,6 +39,12 @@ public class GroovySecurityTests extends ESTestCase {
 
     private GroovyScriptEngineService se;
 
+    static {
+        // ensure we load all the timezones in the parent classloader with all permissions
+        // relates to https://github.com/elastic/elasticsearch/issues/14524
+        org.joda.time.DateTimeZone.getDefault();
+    }
+
     @Override
     public void setUp() throws Exception {
         super.setUp();